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  <title>Changes the user of the specified mysqlnd database connection</title>

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</div><hr /><div id="mysqlnduhconnection.changeuser" class="refentry">
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  <h1 class="refname">MysqlndUhConnection::changeUser</h1>
  <p class="verinfo">(PECL mysqlnd-uh &gt;= 1.0.0-alpha)</p><p class="refpurpose"><span class="refname">MysqlndUhConnection::changeUser</span> &mdash; <span class="dc-title">Changes the user of the specified mysqlnd database connection</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-mysqlnduhconnection.changeuser-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><strong>MysqlndUhConnection::changeUser</strong></span>
    ( <span class="methodparam"><span class="type"><span class="type mysqlnd_connection">mysqlnd_connection</span></span> <code class="parameter">$connection</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$user</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$password</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$database</code></span>
   , <span class="methodparam"><span class="type">bool</span> <code class="parameter">$silent</code></span>
   , <span class="methodparam"><span class="type">int</span> <code class="parameter">$passwd_len</code></span>
   )</div>

  <p class="para rdfs-comment">
   Changes the user of the specified mysqlnd database connection
  </p>

 </div>


 <div class="refsect1 parameters" id="refsect1-mysqlnduhconnection.changeuser-parameters">
  <h3 class="title">参数</h3>
  <dl>

   
    <dt>
<em><code class="parameter">connection</code></em></dt>

    <dd>

     <p class="para">
      Mysqlnd connection handle. Do not modify!
     </p>
    </dd>

   
   
    <dt>
<em><code class="parameter">user</code></em></dt>

    <dd>

     <p class="para">
      The MySQL user name.
     </p>
    </dd>

   
   
    <dt>
<em><code class="parameter">password</code></em></dt>

    <dd>

     <p class="para">
      The MySQL password.
     </p>
    </dd>

   
   
    <dt>
<em><code class="parameter">database</code></em></dt>

    <dd>

     <p class="para">
      The MySQL database to change to.
     </p>
    </dd>

   
   
    <dt>
<em><code class="parameter">silent</code></em></dt>

    <dd>

     <p class="para">
      Controls if mysqlnd is allowed to emit errors or not.
     </p>
    </dd>

   
   
    <dt>
<em><code class="parameter">passwd_len</code></em></dt>

    <dd>

     <p class="para">
      Length of the MySQL password.
     </p>
    </dd>

   
  </dl>

 </div>


 <div class="refsect1 returnvalues" id="refsect1-mysqlnduhconnection.changeuser-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns <strong><code>TRUE</code></strong> on success.
   Otherwise, returns <strong><code>FALSE</code></strong>
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-mysqlnduhconnection.changeuser-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-1849">
    <p><strong>Example #1 <span class="function"><strong>MysqlndUhConnection::changeUser()</strong></span> example</strong></p>
        <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">class&nbsp;</span><span style="color: #0000BB">proxy&nbsp;</span><span style="color: #007700">extends&nbsp;</span><span style="color: #0000BB">MysqlndUhConnection&nbsp;</span><span style="color: #007700">{<br />&nbsp;</span><span style="color: #FF8000">/*&nbsp;Hook&nbsp;mysqlnd's&nbsp;connection::change_user&nbsp;call&nbsp;*/<br />&nbsp;</span><span style="color: #007700">public&nbsp;function&nbsp;</span><span style="color: #0000BB">changeUser</span><span style="color: #007700">(</span><span style="color: #0000BB">$res</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$user</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$passwd</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$db</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$silent</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$passwd_len</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s(%s)\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">__METHOD__</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">var_export</span><span style="color: #007700">(</span><span style="color: #0000BB">func_get_args</span><span style="color: #007700">(),&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">));<br />&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$ret&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">parent</span><span style="color: #007700">::</span><span style="color: #0000BB">changeUser</span><span style="color: #007700">(</span><span style="color: #0000BB">$res</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$user</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$passwd</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$db</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$silent</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$passwd_len</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s&nbsp;returns&nbsp;%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">__METHOD__</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">var_export</span><span style="color: #007700">(</span><span style="color: #0000BB">$ret</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">));<br />&nbsp;&nbsp;&nbsp;return&nbsp;</span><span style="color: #0000BB">$ret</span><span style="color: #007700">;<br />&nbsp;}<br />}<br /></span><span style="color: #FF8000">/*&nbsp;Install&nbsp;proxy/hooks&nbsp;to&nbsp;be&nbsp;used&nbsp;with&nbsp;all&nbsp;future&nbsp;mysqlnd&nbsp;connection&nbsp;*/<br /></span><span style="color: #0000BB">mysqlnd_uh_set_connection_proxy</span><span style="color: #007700">(new&nbsp;</span><span style="color: #0000BB">proxy</span><span style="color: #007700">());<br /><br /></span><span style="color: #FF8000">/*&nbsp;Create&nbsp;mysqli&nbsp;connection&nbsp;which&nbsp;is&nbsp;using&nbsp;the&nbsp;mysqlnd&nbsp;library&nbsp;*/<br /></span><span style="color: #0000BB">$mysqli&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"root"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">""</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"test"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;Example&nbsp;of&nbsp;a&nbsp;user&nbsp;API&nbsp;call&nbsp;which&nbsp;triggers&nbsp;the&nbsp;hooked&nbsp;mysqlnd&nbsp;call&nbsp;*/<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">change_user</span><span style="color: #007700">(</span><span style="color: #DD0000">"root"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"bar"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"test"</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
proxy::changeUser(array (
  0 =&gt; NULL,
  1 =&gt; &#039;root&#039;,
  2 =&gt; &#039;bar&#039;,
  3 =&gt; &#039;test&#039;,
  4 =&gt; false,
  5 =&gt; 3,
))
proxy::changeUser returns false
bool(false)

</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-mysqlnduhconnection.changeuser-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member">
     <span class="function"><a href="function.mysqlnd-uh-set-connection-proxy.html" class="function" rel="rdfs-seeAlso">mysqlnd_uh_set_connection_proxy()</a> - Installs a proxy for mysqlnd connections</span>
    </li>
    <li class="member">
     <span class="function"><a href="mysqli.change-user.html" class="function" rel="rdfs-seeAlso">mysqli_change_user()</a> - Changes the user of the specified database connection</span>
    </li>
   </ul>
  </p>
 </div>


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